Why do importing Snippets on a multi site install fail?

How can I use the content in an enclosed shortcode?

If the shortcode is enclosed and contains content between the tags in a post.
Example: [shortcode]Some text[/shortcode] the text within will be availble in
a variable called content. So in your snippet use {content} to display it. Don't
enter 'content' in the variable field, it's automatically assigned.